Grammatika Σοφία, Zourbanos Νίκος, and Karagianni Όλγα. “A Preliminary Study on the Functions of Self-Talk in Tennis Athletes”. Inquiries in Physical Education and Sport 6, no. 3 (December 31, 2008): 348–356. Accessed May 11, 2024. https://journals.lib.uth.gr/index.php/inquiries/article/view/1290.